LF: Re: PA3BCA

[Minto Witteveen <minto.witteveen@gmail.com>]

Hi Stefan.

 

I see your CQ on my grabber at this moment.
How does your ERP now compare with yesterday (during your QSO with Mal)?

It looks like S/N is now worse here then yesterday. Reason might be the loop versus the miniwhip (with the miniwhip the winner). But on the other hand there seems to be a lot of QRN (because of lightning at this moment.

 

73’s Minto pa3bca

 

 

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Ceterum censeo Carthaginem delendam esse

 

From: Stefan Schäfer

Sent: Friday, August 12, 2011 20:02

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: PA3BCA

 

Hi Minto,

Am 12.08.2011 19:42, schrieb Minto Witteveen:

How much power were you generating?

73’s, Minto pa3bca

 

 

It changes all the time. Not even sure since i just have an E field probe to decouple some power from my TX antenna and feed it to a 50 uA amperemeter, shunted by a potentiometer. This poti was adjusted to show 100% full scale when using 120 W RF before some weeks. Now reduced the parallel R on the poti so it shows just 25 uA then. Got 50 uA anyway by QRO and more (not sure). So it should be arround 500W. This is -6 dBfs :-)

But the antenna, i.e. the coil and its cover is very lossy it seems. When there was rain, i have up to twice the losses :-( Need to search for an alternative cover (mustn't burn, so a water barrel is no alternative...).


73, Stefan/DK7FC